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| author | Colin Ian King <colin.king@canonical.com> | 2019-12-12 18:16:57 +0000 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2019-12-18 16:09:05 -0500 |
| commit | 63408972e4715ee03e470d9616e2b6aebd6f2595 (patch) | |
| tree | 126e3c5cb63e58c5a50318fd42a33bb79bfc56dc /drivers/gpu/drm/amd/powerplay/hwmgr | |
| parent | b3eca59d998587b1930cb846910ec9824b9c2122 (diff) | |
| download | linux-63408972e4715ee03e470d9616e2b6aebd6f2595.tar.gz linux-63408972e4715ee03e470d9616e2b6aebd6f2595.tar.bz2 linux-63408972e4715ee03e470d9616e2b6aebd6f2595.zip | |
drm/amd/powerplay: fix various dereferences of a pointer before it is null checked
There are several occurrances of the pointer hwmgr being dereferenced
before it is null checked. Fix these by performing the dereference
of hwmgr after it has been null checked.
Addresses-Coverity: ("Dereference before null check")
Fixes: c9ffa427db34e6 ("drm/amd/powerplay: enable pp one vf mode for vega10")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/powerplay/hwmgr')
| -rw-r--r-- | drivers/gpu/drm/amd/powerplay/hwmgr/hwmgr.c | 15 |
1 files changed, 3 insertions, 12 deletions
diff --git a/drivers/gpu/drm/amd/powerplay/hwmgr/hwmgr.c b/drivers/gpu/drm/amd/powerplay/hwmgr/hwmgr.c index e2b82c902948..f48fdc7f0382 100644 --- a/drivers/gpu/drm/amd/powerplay/hwmgr/hwmgr.c +++ b/drivers/gpu/drm/amd/powerplay/hwmgr/hwmgr.c @@ -282,10 +282,7 @@ err: int hwmgr_hw_fini(struct pp_hwmgr *hwmgr) { - if (!hwmgr->not_vf) - return 0; - - if (!hwmgr || !hwmgr->pm_en) + if (!hwmgr || !hwmgr->pm_en || !hwmgr->not_vf) return 0; phm_stop_thermal_controller(hwmgr); @@ -305,10 +302,7 @@ int hwmgr_suspend(struct pp_hwmgr *hwmgr) { int ret = 0; - if (!hwmgr->not_vf) - return 0; - - if (!hwmgr || !hwmgr->pm_en) + if (!hwmgr || !hwmgr->pm_en || !hwmgr->not_vf) return 0; phm_disable_smc_firmware_ctf(hwmgr); @@ -327,13 +321,10 @@ int hwmgr_resume(struct pp_hwmgr *hwmgr) { int ret = 0; - if (!hwmgr->not_vf) - return 0; - if (!hwmgr) return -EINVAL; - if (!hwmgr->pm_en) + if (!hwmgr->not_vf || !hwmgr->pm_en) return 0; ret = phm_setup_asic(hwmgr); |